There have been several highlighter extensions I have seen over the years for Firefox, however this one might be my favorite.  The ultra light-weight Highlights add-on for Firefox simply highlights selected text on web pages with a right-click of the mouse.

To highlight text on a web page, select the text, right-click (‘Ctrl+Click’, on Mac OS X) and select ‘Highlight’ menu from the popup.  The default yellow highlight color can easily be changed, by clicking the “Highlights” icon on the [...]

The Wired-Marker add-on for Firefox gives you access to one of the best virtual highlighters I have seen thus far.  Being able to highlight on web pages in various styles and colors can really help you in a number of ways when doing research or working Online.

You can think of it as an electronic bookmarker that services as a guide with you go back to that specific web page.  Another neat feature is it also automatically records and saves your [...]